| THYATIRA COMPANY LIMITED | Private company limited by shares | Dissolved |
| Thybongo Enterprise Limited | Private company limited by shares | Live |
| THYC LIMITED | | Live |
| THYDE INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| KIA THYE LIMITED | Private company limited by shares | Dissolved |
| THYE WO LIMITED | Private company limited by shares | Dissolved |
| Thylacine Limited | Private company limited by shares | Live |
| Thyles (China) Limited | Private company limited by shares | Live |
| THYME COMPANY LIMITED | Private company limited by shares | Live |
| THYME CATERING LIMITED | Private company limited by shares | Dissolved |
| Thyoasis Industrial Limited | Private company limited by shares | Live |
| China Thyroid Disease Medical Research Center Limited | Private company limited by shares | Live |
| HONG KONG THYROID ASSOCIATION LIMITED | Company limited by guarantee | Live |
| Hong Kong Scarless Thyroid Medical Center Limited | | Live |
| Hong Kong Thyroid and Endocrine Surgery Centre Limited | | Live |
| Hong Kong International Institute of Diabetes & Thyroid Diseases Limited | Private company limited by shares | Live |
| Hong Kong Global Thyroid Medical Research Institute Limited | | Live |
| HONG KONG THYROID SOCIETY LIMITED | Company limited by guarantee | Live |
| Thyrus Capital Limited | Private company limited by shares | Live Commenced dormancy on 11-Jun-2014 |
| Thy's Management Limited | Private company limited by shares | Live |
| THYS1U LIMITED | Private company limited by shares | Live |
| Thysant Trading Limited | | Live |
| THYSCO LIMITED | Private company limited by shares | Live |
| BACK TO THYSELF LIMITED | | Live |
| Thyson Medical Managnement Limited | Private company limited by shares | Live |
| Thyson Medical Technology Co., Limited | Private company limited by shares | Live |
| THYSSEN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| THYSSEN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| THYSSEN ASIA RAW MATERIALS LIMITED | Private company limited by shares | Dissolved |
| THYSSEN ELEVATOR (ASIA PACIFIC) LIMITED | Private company limited by shares | Live |
| THYSSEN HANIEL TRAVEL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| Marohn Thyssenkrupp Elevator Limited | Private company limited by shares | Live |
| Thyssentrans Group (HK) Limited | Private company limited by shares | Live |
| THYSSENTRANSP EQUIPMENT GROUP (HK) LIMITED | Private company limited by shares | Live |
| THYSUN (CHINA) LIMITED | Private company limited by shares | Dissolved |
| THYVANE LIMITED | Private company limited by shares | Live Commenced dormancy on 29-Feb-2016 |
| Thyway Private Limited | Private company limited by shares | Live |
| THYWU (HK) CO., LIMITED | Private company limited by shares | Live |
| CHINA THYZ TRADITION CULTURE MEDIA LIMITED | Private company limited by shares | Dissolved |